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Didi Dwi Anggoro
Chemical Engineering Department, Engineering Faculty, Diponegoro University Jl. Prof. Soedarto, SH, Tembalang, Semarang 50239, Telp.(024)7460058
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Transportation

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HIDROLISIS SELULOSA ECENG GONDOK (Eichhornia crassipe) MENJADI GLUKOSA DENGAN KATALIS ARANG AKTIF TERSULFONASI Putri Anggraeni; Zaqiyah Addarojah; Didi Dwi Anggoro
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

This research engage water hyacinth (Eichhornia crassipes) as source of cellulose for hydrolysis into glucose using sulfonated activated carbon as catalyst. The aimsof this research are to know optimum conditions for hydrolysis water hyacinth into glucose which includes hydrolysis temperature, hydrolysis times, and the weight of catalyst. This research design uses three steps, first is making catalyst,then hydrolysis of cellulose and the last is testing content glucose of filtrate. The data results was plotted on a mathematical model and then optimized using the software Statistica 6.0 by Response Surface Methodology method (RSM). The result obtained by use of a mathematical model for relationship activator combination temperature, time and weight of catalyst for content glucose : Y = 11,601+2,353 x1 – 1,041x1² + 2,463 x2 – 1,554 x2² -2,847x3 – 1,316 x3² + 0,025 x1x2 - 0,885 x1x3 + 0,228 x2x3. The optimum conditions of hydrolysis variable for content glucose obtained from the graph fitted response surface and contour plot that indicates optimum hydrolysis temperature in the range 130°C to 170°C, the optimum hydrolysis time in the range 130 minutes to 210 minutes, and weight of catalyst in the range 3 gr to 20 gr. From this study are expected any further research on application glucose from hydrolysis of water hyacinth as raw material for bioethanol production.
Mekanisasi Pengaduk Adonan Bahan Baku Wingko Babat Sebagai Upaya Peningkatan Produktivitas dan Kualitas Produk Luqman Buchori; Didi Dwi Anggoro; Dyah Hesti Wardhani
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Peningkatan Kualitas dan Kuantitas Produk Elektroplating Melalui Perbaikan Kualitas Larutan Kimia di Bak Elektroplating dengan Filter Elektroplating Luqman Buchori; Didi Dwi Anggoro; Dyah Hesti Wardhani
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Small electroplating industry is a small industry that is widely available in the city of Semarang. The mainprocesses in the electroplating industry are located in the coating process. This process occurs in theelectroplating bath. The quality of the metal coating is highly dependent on the quality of the chemicalsolution contained in the electroplating bath. If the chemical solution has good quality, such as the solutionwas clear, there are no impurities, the quality of the coating is also good. If the quality of the chemicalsolution is not good, then the results of the coating are also inferior such as there are bubbles in the layer, orthere is dirt on the die so that the coating process must be repeated. This will add to the cost of productionand a coating time so that increases operational costs. To solve this problem we need a system that canproduce a chemical solution that has good quality, clear, and there are no impurities. This system is calledthe filter electroplating. Results of electroplating filter application showed to increase the quantity andquality of production. The production capacity increased by 30% per day. The production turnover up 35%and profits increased by 45%. The chemical solution becomes clear and does not contain impurities so thatthe coating results becomes good.
Optimasi Proses Dealuminasi Modernite sebagai Katalis Perengkahan Minyak Goreng Bekas menjadi Biofuel Didi Dwi Anggoro; Luqman B; Setia Budi S; Nita A; Rohmadona H; Sigit B
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Used cooking oil is a food industry waste and household waste, which has high potential to be used as biofuel feedstock, which has the chain of carbon and hydrogen atoms high. Biofuel can be produced by the method of catalytic cracking. Modernite is potential to be used as an acid catalyst for the cracking process. To get a good acidity catalyst, modernite can be modified catalyst by dealumination process. The raw material used is used cooking oil and used modernite type zeolite catalyst with a trademark CBV 21A, which having a mole ratio of SiO2 / Al2O3 of 20 and a surface area of 500 m2/g. The reactor used in the form of a catalytic reactor and a three-stage process i.e dealumination of the catalyst, catalyst calcination process, and catalyst testing to reaction of used cooking oil catalytic cracking. Dealuminated catalyst is carried on a temperature that is 30, 50, 70°C. Modernite catalyst dealumination results included in the pipe nozzle and injected into the furnace by flowing N2 gas at a temperature of 600oC for 5 jam. For catalyst testing for used cooking oil cracking reaction under temperature 450 oC. In this study, the optimization equation for the liquid product is Y = 2,801712 + 0,296807 X1 + 0,579137 X2 + 0,486784 X3 – 0,1875 X - 0,2125 X2X3 – 0,211775 X1^2 + 0,467905 X2^2 – 0,59326 X3^2
The Effects of Sodium Hydroxide (NaOH) Concentration and Reaction Temperature on The Properties of Biodiesel from Philippine Tung (Reutealis Trisperma) Seeds Slamet Supriyadi; Purwanto Purwanto; Didi Dwi Anggoro; Hermawan Hermawan
Automotive Experiences Vol 5 No 1 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.604 KB) | DOI: 10.31603/ae.5986

Abstract

Philippine Tung (Reutealis trisperma) is an indigenous nut that is a relatively new feedstock for producing biodiesel in Indonesia. The nature of NaOH base catalyst and reaction temperature plays an important role in the method of biodiesel production. This study aimed to assess the effects of different percentages of NaOH base catalyst and reaction temperature on physicochemical properties of Philippine Tung biodiesel. Transesterification process was carried out by reacting Philippine Tung oil with methanol and NaOH catalyst. NaOH weight to oil weight was at 0.25%, 0.5%,0.75% and 1%, the reaction temperature set up were at 60°C and 70°C, while methanol-oil molar ratio was set at 6:1. Yield, acid value, saponification value, density, and viscosity of biodiesel were significantly influenced by NaOH catalyst concentrations. Meanwhile reaction temperature had no effect on the yield and viscosity. Philippine Tung biodiesel produced using 0.25% NaOH catalyst met the SNI 04-7182-2015 biodiesel standard of the properties investigated in this study (yield: 96.18%, acid value: 0.466 mg KOH/g, saponification value: 200.083 mg KOH/g, density: 0.889 g/mL, viscosity: 5.276 cSt).
KELAYAKAN EKONOMI PADA PRARANCANGAN PABRIK FTALAT ANHIDRIDA KAPASITAS 45.000 TON/TAHUN Diah Anggraeni Jatraningrum; Sari Octavianingrum; Herry Santosa; Didi Dwi Anggoro
Widyariset Vol 13, No 1 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.13.1.2010.209-215

Abstract

A pre-design of plant to produce 45.000 tons/year phthalic anhydride from 47,200 tons/year ortho-xylene uses Davy McKee process with vanadium pentaoxide catalyst in non isothermal - non adiabatic fixed bed multitubes reactor that operated at 2 atm and 340-360oC. Phthalic anhydride is intermediate chemical that raw material and product price depend on the global economical condition. From the design basis, the economical parameters analysis show that after tax, Profit on Sales (POS) is 7.78%, Return On Investment (ROI) is 34.76%, Pay Out Time (POT) is 2.23 years, Break Event Point (BEP) is 43.71%, Shut Down Point (SDP) is 28.16% and Discounted CashFlow Rate of Return (DCFRR) is 22.40%. All economical parameters requirements for plant design are complied. The range of optimum commercial plant capacity is 26,221 to 71,210 tons/year. Due to price fluctuation, plant can be run normally on range of increasing raw material price +6.79% and decreasing product price -6.92% from price basis and it is better than South East Asia market condition. It is concluded that the phthalic anhydride plant is feasible to be established in Indonesia.
A Review on the Recent Breakthrough Methods and Influential Parameters in the Biodiesel Synthesis and Purification S. Silviana; Didi Dwi Anggoro; H. Hadiyanto; Cantika Aulia Salsabila; Kevin Aprilio; Anisa Widia Utami; Afriza Ni'matus Sa'adah; Febio Dalanta
International Journal of Renewable Energy Development Vol 11, No 4 (2022): November 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.43147

Abstract

Biodiesel has recently received much attention as an energy source with numerous benefits such as high degradability, negligible toxicity, and minimal emissions of carbon monoxide gases as well as particulates. Therefore, this research aims to compare, review, and summarize the conventional and advanced methods of biodiesel production. Currently, some emerging processes that were developed for advanced biodiesel production include microwave-assisted synthesis, ultrasonic-assisted synthesis, supercritical transesterification, and liquid phase plasma discharge technology. The types of feedstocks, catalysts, and operating conditions as the influential parameters in biodiesel synthesis are also discussed. Moreover, in the purification process, the effectiveness of purification depends on the type of catalyst applied in the synthesis process. This research also reviewed and compared several commonly used purification methods such as wet and dry washing, ion exchange and precipitation, complexation, and membrane-based separation that have shown significant results along with the impacts of biodiesel production on environmental and economic sectors
A Review on the Recent Breakthrough Methods and Influential Parameters in the Biodiesel Synthesis and Purification S. Silviana; Didi Dwi Anggoro; H. Hadiyanto; Cantika Aulia Salsabila; Kevin Aprilio; Anisa Widia Utami; Afriza Ni'matus Sa'adah; Febio Dalanta
International Journal of Renewable Energy Development Vol 11, No 4 (2022): November 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.43147

Abstract

Biodiesel has recently received much attention as an energy source with numerous benefits such as high degradability, negligible toxicity, and minimal emissions of carbon monoxide gases as well as particulates. Therefore, this research aims to compare, review, and summarize the conventional and advanced methods of biodiesel production. Currently, some emerging processes that were developed for advanced biodiesel production include microwave-assisted synthesis, ultrasonic-assisted synthesis, supercritical transesterification, and liquid phase plasma discharge technology. The types of feedstocks, catalysts, and operating conditions as the influential parameters in biodiesel synthesis are also discussed. Moreover, in the purification process, the effectiveness of purification depends on the type of catalyst applied in the synthesis process. This research also reviewed and compared several commonly used purification methods such as wet and dry washing, ion exchange and precipitation, complexation, and membrane-based separation that have shown significant results along with the impacts of biodiesel production on environmental and economic sectors
Optimization of Monoglycerides Production Using KF/CaO-MgO Heterogeneous Catalysis Luqman Buchori; Didi Dwi Anggoro; Indro Sumantri; Riko Rikardo Putra
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.3.4251.689-696

Abstract

The production of monoglyceride or monoacylglycerol (MAG) from triglycerides and glycerol has been studied. The purpose of this research was to study the effect of using KF/CaO-MgO catalyst on MAG production with batch reactor. The effect of reaction temperature, reaction time, and catalyst loading was investigated using Response Surface Methods (RSM). The reaction temperature, reaction time, and catalyst loading were varied at 200-220 ºC,  2-4 hours, and 0.1-0.3 % w/w, respectively. The maximum yield of monoglyceride 41.58% was achieved the optimum conditions of  catalyst loading of 0.19 % (w/w), reaction temperature of 208.4 ºC, and reaction time of 3.20 hours.  
The Potential of Cellulose as a Source of Bioethanol using the Solid Catalyst: A Mini-Review Didi Dwi Anggoro; Kamsi Nur Oktavia
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10635.661-672

Abstract

One of the most important biofuels is cellulose ethanol which is a popular material for bioethanol production. The present cellulosic ethanol production is through the cellulolytic process and this involves the splitting of complex cellulose into simple sugars through the hydrolysis process of the lignocellulose pretreated with acids and enzymes after which the product is fermented and distilled. There are, however, some challenges due to the enzymatic and acid processes based on the fact that acid hydrolysis has the ability to corrode equipment and cause unwanted waste while the enzymatic hydrolysis process requires a longer time because enzymes are costly and limited. This means there is a need for innovations to minimize the problems associated with these two processes and this led to the application of solid catalysts as the green and effective catalyst to convert cellulose to ethanol. Solid catalysts are resistant to acid and base conditions, have a high surface area, and do not cause corrosion during the conversion of the cellulose due to their neutral pH. This review, therefore, includes the determination of the cellulose potential as feedstock to be used in ethanol production as well as the preparation and application of solid catalyst as the mechanism to convert cellulose into fuel and chemicals. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Co-Authors Afriza Ni'matus Sa'adah Aji Prasetyaningrum Andri Cahyo Kumoro Anindita Indriana Anisa Widia Utami Antonio Giovanno Aprilina Purbasari Arif Budiarto Asep Muhamad Samsudin, Asep Muhamad Asmadi, Mohd Bintang Ayu Kalimantini Bobby Rio Indriyantho Buchori , Luqman Cantika Aulia Salsabila Chusnul Khotimah Diah Anggraeni Jatraningrum Dian Cahyaningrum Didik Prasetyoko Dyah Hesti Wardhani Dyah Hesti Wardhani Fachmy Adji Pangestu Setiawan Fadhil Rifqi P Faleh Setia Budi Fathoni, Moch Zaenal FatmaTsaniya Chamdani Febio Dalanta Ganish Eko Mayndra Giveni Christina Silaen H Hadiyanto H. Hadiyanto Hacker, Viktor Hartati Hartati Hartuti Purnaweni Haryono Setiyo Huboyo Hassan, Abdull Hafidz Herawati Oktaviani Herawati Oktavianty Hermawan, Hermawan Herry Santosa I. Istadi Imtinan, Alifa Bakhitah Indro Sumantri Ismail, Siti Norazian Istadi Jamarudin, Aizah Kamsi Nur Oktavia Kevin Aprilio Le Monde, Brilliant Umara Luqman B Luqman Buchori Lutfi Af’idatul Kamilah Melissa Justine Renjaan Mhd. Shaumi Al Anshar Muhamad, Theobroma Guntur Nabilah, Farhanah Nasher, Kharissa Nerfiana Fradevi Nino Rinaldi Nita A Nita Aryanti Nor Aishah Saidina Amin Nor Basid Adiwibawa Prasetya Nugroho, Agung Nur Hidayati Nur Rokhati Nurani Ikhlas Nurcahyani, Septra Nurdiani, Maulida Nurushofa, Faustina Alda P Purwanto Pakpahan, Agnes J. Pakpahan, Andre W. S. Prihiyandhoko, Hageng Primasatya, Dimas Priyo Atmaji Putra, Muhammad Fadila Putri Anggraeni Resti Nur Utami Riko Rikardo Putra Riko Rikardo Putra Riskatama Atmaji Rispiandi Rispiandi Riyanto, Teguh Rohmadona H Rolita, Lisa Roschger, Michaela S Subandriyo Salsabila, Unik Hanifah Saputra, Roni Ade Sari Octavianingrum Setia Budi S Setia Budi Sasongko Setia Budi Sasongko Setiadi, Iqfan Dwi Sigit B Silviana , Silviana Silviana Silviana Slamet Supriyadi Sulardjaka Sulardjaka Teguh Riyanto Triani, Meiri Udin Mabruro Vitus Dwi Yunianto Budi Ismadi Wahyu Bahari Setianto Wahyu Bahari Setianto Wahyudi, Dhiky Wibawa, Muhammad Hanif Dzikri Wirda Udaibah Yayuk Astuti Yayuk Mundriyastutik Yusof, Nurul Asyikin Zainol, Muzakkir Mohamad Zainol, Muzakkir Mohammad Zainuddin, Kamarul Ridwan Zakaria, Zaki Yamani Zaqiyah Addarojah Zulfikar Muriadiputra